The fact that this was the twentieth Readercon, and the realization that I've attended them since the second one, was one of those "oh shit" moments that have become decidedly more frequent as of late.
I am ramping up for Anticipation in Montreal in a few weeks, so posting may be a bit thin.
Speaking of looking backward, a good chunk of the next two weeks will be spent with We Choose the The Moon running in the background. It's a realtime interactive recreation of the Apollo 11 mission. And it comes with a desktop widget.